<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 404错误</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
            background-color: #f8f9fa;
            color: #343a40;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            text-align: center;
            line-height: 1.6;
        }

        .container {
            max-width: 600px;
            padding: 2rem;
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        h1 {
            font-size: 4rem;
            margin: 0;
            color: #dc3545;
        }

        h2 {
            margin-top: 0;
            color: #495057;
        }

        p {
            margin-bottom: 2rem;
            color: #6c757d;
        }

        .emoji {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .btn {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background-color: #007bff;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            transition: background-color 0.3s;
        }

        .btn:hover {
            background-color: #0056b3;
        }

        .links {
            margin-top: 2rem;
            font-size: 0.9rem;
        }

        .links a {
            color: #6c757d;
            text-decoration: none;
            margin: 0 0.5rem;
        }

        .links a:hover {
            text-decoration: underline;
        }
    </style>
</head>
<body>
<div class="container">
    <div class="emoji">😕</div>
    <h1>404</h1>
    <h2>页面未找到</h2>
    <p>抱歉，您访问的页面不存在或已被移除。</p>
    <a href="/" class="btn">返回首页</a>

    <div class="links">
        <a href="/about">关于我们</a> |
        <a href="/contact">联系我们</a> |
        <a href="/help">帮助中心</a>
    </div>
</div>
</body>
</html>